Category: 3290-92-4

Chen, Yung-Chung; Kuo, Yuan-Tsung; Ho, Tsung-Han published the artcile< Photo-polymerization properties of type-II photoinitiator systems based on 2-chlorohexaaryl biimidazole (o-Cl-HABI) and various N-phenylglycine (NPG) derivatives>, Computed Properties of 3290-92-4, the main research area is photoinitiator photopolymerization phenylglycine derivative chlorohexaaryl biimidazole.

A series of p-substituted NPG derivatives (Cl-NPG, OMe-NPG and NO2-NPG) comprising different push-pull characteristics have been synthesized and characterized. The NPG derivatives have good thermal stability and red shifted absorption when compared with the original N-Ph glycine (NPG) compound These NPGs were selected in combination with 2-chlorohexaaryl biimidazole (o-Cl-HABI) for Type II free radical polymerization (FRP). Com. NPG was also mixed with o-Cl-HABI for comparison. Their photo-polymerization properties were investigated by the gel fraction method in a nitrogen atm. Electron transfer efficiencies for those Type II packages were studied by cyclic voltammetry (CV) and free energy change ΔG results.

Photochemical & Photobiological Sciences published new progress about Band gap. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Computed Properties of 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Okesanjo, Omotola; Tennenbaum, Michael; Fernandez-Nieves, Alberto; Meredith, J. Carson; Behrens, Sven H. published the artcile< Rheology of capillary foams>, Category: esters-buliding-blocks, the main research area is vinyl chloride copolymer capillary foam rheol.

Aqueous foams are ubiquitous; they appear in products and processes that span the cosmetics, food, and energy industries. The versatile applicability of foams comes as a result of their intrinsic viscous and elastic properties; for example, foams are exploited as drilling fluids in enhanced oil recovery for their high viscosity. Recently, so-called capillary foams were discovered: a class of foams that have excellent stability under static conditions and whose flow properties have so far remained unexplored. The unique architecture of these foams, containing oil-coated bubbles and a gelled network of oil-bridged particles, is expected to affect foam rheol. In this work, we report the first set of rheol. data on capillary foams. We study the viscoelastic properties of capillary foams by conducting oscillatory and steady shear tests. We compare our results on the rheol. properties of capillary foams to those reported for other aqueous foams. We find that capillary foams, which have low gas volume fractions, exhibit long lasting rheol. stability as well as a yielding behavior that is reminiscent of surfactant foams with high gas volume fractions.

Soft Matter published new progress about Creep. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sun, Zhian; Liu, Huachun; Zhou, Yanqiang; Zhao, Shanwen; Li, Jianmin; Wang, Xiaoxiao; Gong, Bolin published the artcile< A restricted access molecularly imprinted polymer coating on metal-organic frameworks for solid-phase extraction of ofloxacin and enrofloxacin from bovine serum>, Electric Literature of 3290-92-4, the main research area is ofloxacin enrofloxacin serum solid phase extraction metal organic framework.

A restricted access molecularly imprinted polymer (RAMIP) crosslinked with bovine serum albumin (BSA) was prepared on the surface of the mesoporous UiO-66-NH2 metal-organic framework (MOF). The surface morphol., imprinting behavior, and protein exclusion properties of UiO-66-NH2@RAMIP@BSA were investigated. The maximum adsorption capacity was 50.55 mg g-1 for ofloxacin, with a 99.4% protein exclusion rate. Adsorption equilibrium was reached in 9 min. Combined with RP-HPLC, a solid-phase extraction column filled with UiO-66-NH2@RAMIP@BSA was used to selectively enrich and analyze ofloxacin and enrofloxacin antibiotics from bovine serum with recoveries of 93.7-104.2% with relative standard deviations of 2.0-4.5% (n = 3). The linear range and the limit of detection were 0.1-100μg mL-1 and 15.6 ng mL-1, resp. These results suggest that UiO-66-NH2@RAMIP@BSA is an efficient pretreatment adsorbent for biol. sample anal.

RSC Advances published new progress about Adsorption. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Electric Literature of 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Grochowicz, Marta; Szajnecki, Lukasz; Rogulska, Magdalena published the artcile< Crosslinked 4-Vinylpyridine Monodisperse Functional Microspheres for Sorption of Ibuprofen and Ketoprofen>, Electric Literature of 3290-92-4, the main research area is ibuprofen ketoprofen vinylpyridine microsphere crosslinking; SPE; functional polymers; ibuprofen; ketoprofen; polymeric microspheres; porous polymers; sorption.

Nowadays, ibuprofen and ketoprofen are widely used over-the-counter medications to treat inflammation, fever, or pain. Their high consumption and improper disposal cause them to get into the environment and often pollute surface water. In this study, the new polymeric porous microspheres based on 4-vinylpyridine (4VP) are presented as effective sorbents for ibuprofen and ketoprofen preconcentration and removal. The porous microspheres were obtained via seed swelling polymerization with the use of two types of methacrylate crosslinkers, i.e., trimethylolpropane trimethacrylate (TRIM) and 1,4-dimethacryloiloxybenzene (14DMB). Addnl., as a reference sorbent, a copolymer of styrene and divinylbenzene was obtained. Porous structure investigations showed that the microspheres possess a sp. surface area of about 100 m2/g, but noticeable differences were observed in their internal topog. depending on the type of crosslinker used. Moreover, the porous structure of dry and swollen microspheres differs significantly. Swollen copolymers reveal the presence of micropores. The 4VP microspheres are characterized by high thermal stability; their initial decomposition temperature is about 300°C. The performance of the 4VP copolymers as sorbents in aqueous solutions of drugs was evaluated in static and dynamic modes at three pH values of 3, 7, and 11. The highest sorption efficiency was obtained for ibuprofen and ketoprofen in pH 3. Both 4VP copolymers indicate the high sorption capacity in a static sorption as follows: towards ketoprofen of about 40 mg/g whereas towards ibuprofen of about 90 mg/g and 75 mg/g on copolymer crosslinked with trimethylolpropane trimethacrylate and 1,4-dimethacryloiloxybenzene, resp. The recovery of ibuprofen and ketoprofen after dynamic sorption experiments was higher than 90%.

Polymers (Basel, Switzerland) published new progress about Adsorption. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Electric Literature of 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Wenbang; Wu, Fangling; Dai, Yongwei; Zhang, Jing; Ni, Bichen; Wang, Jiabin published the artcile< Poly (octadecyl methacrylate-co-trimethylolpropane trimethacrylate) monolithic column for hydrophobic in-tube solid-phase microextraction of Chlorophenoxy acid herbicides>, Synthetic Route of 3290-92-4, the main research area is chlorophenoxy acid herbicide polyoctadecyl methacrylate trimethylolpropane trimethacrylate microextraction; HPLC; chlorophenoxy acid herbicides; hydrophobic in-tube solid-phase microextraction; poly (OMA-co-TRIM) monolithic column; rice grains.

Chlorophenoxy acid herbicides (CAHs), which are widely used on cereal crops, have become an important pollution source in grains. In this work, a highly hydrophobic poly (octadecyl methacrylate-co-trimethylolpropane trimethacrylate) [poly (OMA-co-TRIM)] monolithic column has been specially prepared for hydrophobic in-tube solid-phase microextraction (SPME) of CAHs in rice grains. Due to the hydrophobicity of CAHs in acid conditions, trace CAHs could be efficiently extracted by the prepared monolith with strong hydrophobic interaction. Several factors for online hydrophobic in-tube SPME, including the length of the monolithic column, ACN and trifluoroacetic acid percentage in the sampling solution, elution volume, and elution flow rate, were investigated with respect to the extraction efficiencies of CAHs. Under the optimized conditions, the limits of detection of the four CAHs fell in the range of 0.9-2.1 μg/kg. The calibration curves provided a wide linear range of 5-600 μg/kg and showed good linearity. The recoveries of this method ranged from 87.3% to 111.6%, with relative standard deviations less than 7.3%. Using this novel, highly hydrophobic poly (OMA-co-TRIM) monolith as sorbent, a simple and sensitive online in-tube SPME-HPLC method was proposed for anal. of CAHs residue in practical samples of rice grains.

Molecules published new progress about Microextraction (Solid-Phase). 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Synthetic Route of 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gong, Haiyue; Hajizadeh, Solmaz; Liu, Weifeng; Ye, Lei published the artcile< Imprinted Polymer Beads Loaded with Silver Nanoparticles for Antibacterial Applications>, Application of C18H26O6, the main research area is Polymer beads Silver hydrophobic nanoparticles antibacterial; Pickering emulsion; bacteria imprinting; hydrophobic Ag nanoparticles; polyethylenimine; surface imprinting.

After the emergence of multidrug-resistant strains, antibiotic resistance in bacteria has become an important problem. Thus, materials for combating multidrug-resistant bacteria are of vital importance. In this work, we developed an antibacterial material that can selectively capture and destruct bacteria on the basis of their phys. characteristics. To achieve bacterial capture and deactivation with a single material, we used bacterial cells as templates to synthesize surface-imprinted polymer beads in bacteria-stabilized Pickering emulsions. Acrylate-functionalized polyethylenimine was used to coat the bacterial surface so that the coated bacteria can act as a particle stabilizer to establish an oil-in-water Pickering emulsion. Hydrophobic Ag nanoparticles were introduced into the oil phase composed of crosslinking monomers. Bacteria-imprinted beads (BIB) were obtained after the oil phase was polymerized Bacterial binding experiments confirmed the importance of the imprinted sites for specific recognition with the target bacteria. The Ag nanoparticles embedded inside the polymer beads enhanced bacterial inactivation and reduced the leakage of heavy metal in aquatic environment. The combination of bacteria-imprinting with delivery of general-purpose antibacterial reagents offers a useful approach toward selective capture and destruction of bacteria.

ACS Applied Bio Materials published new progress about Antibacterial agents. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Application of C18H26O6.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Razazpour, Fateme; Najafi, Farhood; Moshaverinia, Alireza; Fatemi, Seyyed Mostafa; Sima, Shahabi published the artcile< Synthesis and characterization of a photo-cross-linked bioactive polycaprolactone-based osteoconductive biocomposite>, Application In Synthesis of 3290-92-4, the main research area is photocrosslinked bioactive polypropylene fumarate polycaprolactone osteoconductive biocomposite tissue engineering; PCL; PPF; bio composite; bone defect; copolymer; β-TCP.

In this study, a light cross-linkable biocomposite scaffold based on a photo-cross-linkable poly (propylene fumarate) (PPF)-co-polycaprolactone (PCL) tri-block copolymer was synthesized and characterized. The developed biodegradable scaffold was further modified with β-tricalcium phosphate (β-TCP) bioceramic for bone tissue engineering applications. The developed biocomposite was characterized using H NMR and Fourier transform IR spectroscopy. Moreover, the bioceramic particle size distribution and morphol. were evaluated using Brunauer-Emmett-Teller method, X-ray diffraction, and SEM. The mech. properties and biodegradation of the scaffolds were also evaluated. Cytotoxicity and mineralization assays were performed to analyze the biocompatibility and bioactivity capacity of the developed biocomposite. The characterization data confirmed the development of a biodegradable and photo-cross-linkable PCL-based biocomposite reinforced with β-TCP bioceramic. In vitro analyses demonstrated the biocompatibility and mineralization potential of the synthesized bioceramic. Altogether, the results of the present study suggest that the photo-cross-linkable PCL-PPF-PCL tri-block copolymer reinforced with β-TCP is a promising biocomposite for bone tissue engineering applications. According to the results, this newly synthesized material has a proper chem. composition for further clin.-relevant studies in tissue engineering.

Journal of Biomedical Materials Research, Part A published new progress about Biocomposites. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Application In Synthesis of 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ceglowski, Michal; Kurczewska, Joanna; Ruszkowski, Piotr; Liberska, Joanna; Schroeder, Grzegorz published the artcile< The influence of crosslinking agent onto adsorption properties, release behavior and cytotoxicity of doxorubicin-imprinted microparticles>, Formula: C18H26O6, the main research area is doxorubicin molecularly imprinted polymer microparticle crosslinking agent adsorption release; Cell culture; Doxorubicin; Drug delivery; Microspheres; Molecularly imprinted polymers.

Molecularly imprinted polymers (MIPs) are synthetic polymers that possess cavities selective towards their mol. templates and have found many applications in separation science, drug delivery, and catalysis. Here, we report the synthesis of doxorubicin-imprinted microparticles crosslinked with two different compounds (ethylene glycol dimethacrylate or trimethylolpropane trimethacrylate) and examination of their physicochem. properties. During the synthesis methacrylic acid was used as functional monomer and 2-hydroxyethyl methacrylate was added into polymerization mixture to increase hydrophilicity of the obtained materials and therefore improve interactions with aqueous release medium. The influence of initial concentration and contact time onto doxorubicin adsorption by obtained MIPs microparticles have been investigated. The microparticles obtained using ethylene glycol dimethacrylate as a crosslinker showed 3 times higher adsorption properties towards doxorubicin, than the ones obtained using trimethylolpropane trimethacrylate crosslinker. The release kinetics of doxorubicin from drug-loaded MIPs microparticles has been proven to be dependent upon crosslinker used and pH of the release medium. For drug-loaded MIPs microparticles obtained using both crosslinkers the IC50 values measured for cancer cell were comparable to the ones measured for pure doxorubicin, whereas the cytotoxicity towards normal HDF cell lines was lower.

Colloids and Surfaces, B: Biointerfaces published new progress about Adsorption. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Formula: C18H26O6.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Nunez-Briones, A. G.; Benavides, R.; Martinez-Pardo, M. E.; Carrasco-Abrego, H.; Kotzian-Pereira-Benavides, C.; Espejo-Villalobos, D.; Garcia-Cerda, L. A. published the artcile< Effect of gamma dose rate in the crosslinking of PVC composites used for radiation protection in radiology>, HPLC of Formula: 3290-92-4, the main research area is PVC tantalum carbide composite crosslinking gamma irradiation radiation protection.

Flexible PVC composites loaded with various levels of tantalum carbide (TaC) were gamma irradiated at two different dose rates and their effect on crosslinking level, thermal stability and mech. properties evaluated. The shielding properties of composites against X-Rays at radiodiagnosis energies were also evaluated. Gel percentage results indicate a relatively stable crosslinking level after irradiation, only some reduction was observed for highly loaded composite treated at a low dose rate, although thermal stability observed by TGA was maintained. TaC particles were properly dispersed within the PVC material, as seen by SEM and toughness increased when both E’ and E” Moduli were enhanced after irradiation; even Tg, followed by Tanδ DMA curves, increased noticeably after treatment and for the higher TaC loaded composites, particularly when treated at low dose rate irradiation D. measurements indicated lighter and manageable materials with respect to traditional shielding items. The shielding properties for composites, evaluated in a clin. X-Ray apparatus, in the 50-129 kV interval, show mass attenuation coefficients close to the ones reported for lead, even higher for 50% TaC loaded composite and a very competitive half-value layer (HVL) for all of them.

Radiation Physics and Chemistry published new progress about Complex modulus, tan δ. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, HPLC of Formula: 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chen, Yung-Chung; Kuo, Yuan-Tsung; Ho, Tsung-Han published the artcile< Photo-polymerization properties of type-II photoinitiator systems based on 2-chlorohexaaryl biimidazole (o-Cl-HABI) and various N-phenylglycine (NPG) derivatives>, Computed Properties of 3290-92-4, the main research area is photoinitiator photopolymerization phenylglycine derivative chlorohexaaryl biimidazole.

A series of p-substituted NPG derivatives (Cl-NPG, OMe-NPG and NO2-NPG) comprising different push-pull characteristics have been synthesized and characterized. The NPG derivatives have good thermal stability and red shifted absorption when compared with the original N-Ph glycine (NPG) compound These NPGs were selected in combination with 2-chlorohexaaryl biimidazole (o-Cl-HABI) for Type II free radical polymerization (FRP). Com. NPG was also mixed with o-Cl-HABI for comparison. Their photo-polymerization properties were investigated by the gel fraction method in a nitrogen atm. Electron transfer efficiencies for those Type II packages were studied by cyclic voltammetry (CV) and free energy change ΔG results.

Photochemical & Photobiological Sciences published new progress about Band gap. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Computed Properties of 3290-92-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics